242679431 has 2 divisors, whose sum is σ = 242679432. Its totient is φ = 242679430.

The previous prime is 242679407. The next prime is 242679469. The reversal of 242679431 is 134976242.

It is an a-pointer prime, because the next prime (242679469) can be obtained adding 242679431 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242679431 - 2¹⁰ = 242678407 is a prime.

It is a super-2 number, since 2×242679431² = 117786612460967522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242679631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121339715 + 121339716.

It is an arithmetic number, because the mean of its divisors is an integer number (121339716).

Almost surely, 2^242679431 is an apocalyptic number.

242679431 is a deficient number, since it is larger than the sum of its proper divisors (1).

242679431 is an equidigital number, since it uses as much as digits as its factorization.

242679431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 242679431 is about 15578.1716192883. The cubic root of 242679431 is about 623.7506185913.

The spelling of 242679431 in words is "two hundred forty-two million, six hundred seventy-nine thousand, four hundred thirty-one".